Why Nu Holdings Stock Rallied Today

NU surged 13.66% after Brazil's first-round presidential vote pushed the race to a runoff, with the market reading the result as a potential shift toward business-friendly policy.

Right-wing candidate Flávio Bolsonaro won 47% of the vote, ahead of incumbent Lula da Silva at 45.1%. Neither cleared the threshold to win outright, so the two face off in a runoff on October 25.

The rally ties to Bolsonaro's platform of lower taxes and reduced government spending. The reasoning is that this approach could lead to lower interest rates, which would benefit financial stocks like NU and could reduce consumer debt defaults. That chain of cause and effect is interpretation of the campaign platform, not a guaranteed policy outcome, and it depends entirely on who wins in October.

Valuation sits at 21x earnings, so a double-digit single-day move leaves less cushion if the political narrative turns. The 1.9-point first-round gap between the two candidates is narrow, which suggests the runoff outcome is far from settled.